100PCS Solder Seal Wire Connectors Heat Shrink Butt Connector Terminals Electrical Waterproof Insulated Marine Automotive Copper Including 10 White 23 Red 12 Blue 5 Yellow

Features:
Easy one step connection of wires, soldered, insulated and sealed cables.
Can be perfect use in marine and automobile applications with transparent sleeve for precise inspection when strip and insert wires inside.
Tubing reduces in 2:1 shrinking ratio and solder will melt and flow through the stripped wires, ensuring strong holding and your wire will never slip out of the connectors.
Polyolefin tubing in outside and hot melt adhesive in inside.
Solder, seal and with advanced waterproof function.
Polyolefin heat shrink butt connectors improved pullout strength, provides seal, strain relief, cable check and insulation.